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fuel line routing

This is a discussion on fuel line routing within the Technical forums, part of the Caferacer.net Forums category; What's up guys, question on the fuel lines on a cb350 twin on the tank there are 2 bungs located near the back, pulling from ...

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  1. #1
    Senior Member sdurand76's Avatar
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    fuel line routing

    What's up guys, question on the fuel lines on a cb350 twin

    on the tank there are 2 bungs located near the back, pulling from the base of the tank, and then a 3rd outlet off of the petcock

    carbs have a fuel inlet and overflow on each.

    I'm assuming/guessing it goes from petcock --> tee fitting --> carb inlets

    but do the overflows go back to the tank (that's kind of counter intuitive to me, but I'm not sure what the deal is with those rear bungs then)

  2. #2
    Senior Member midge's Avatar
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    if the petcock has only one outlet, tee it and run to carb inlets, add inline fuel filters

    the overflows just run so they would drip on the ground under the bike

    those rear bungs - are for the tank cross over tube so gas can flow from one side to the other, so just connect them together

  3. #3
    Senior Member midge's Avatar
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    if the petcock has only one outlet, tee it and run to carb inlets, add inline fuel filters

    the overflows just run so they would drip on the ground under the bike

    those rear bungs - are for the tank cross over tube so gas can flow from one side to the other, so just connect them together

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  5. #4
    Senior Member sdurand76's Avatar
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    thanks midge, didn't seem logical that the overflows would run into the tank

  6. #5
    Senior Member sdurand76's Avatar
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    thanks midge, didn't seem logical that the overflows would run into the tank

  7. #6
    Senior Member krapfever's Avatar
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    You can cap those two bungs off and still run it fine. Just keep your tank topped off. Makes tank removal much less of a messy pain in the ass.

    If you do run out of gas, all you gotta do is get over to the side of the road and lean the bike wayyyy over to the right to slosh some of the trapped fuel from the left side over to the right.

    I'm not even kidding.


  8. #7
    Senior Member krapfever's Avatar
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    You can cap those two bungs off and still run it fine. Just keep your tank topped off. Makes tank removal much less of a messy pain in the ass.

    If you do run out of gas, all you gotta do is get over to the side of the road and lean the bike wayyyy over to the right to slosh some of the trapped fuel from the left side over to the right.

    I'm not even kidding.


  9. #8
    Member liam's Avatar
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    i'm gonna do that, i envision my tank will need to be removed many more times, and spilling fuel everywhere gets old fast.

  10. #9
    Member liam's Avatar
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    i'm gonna do that, i envision my tank will need to be removed many more times, and spilling fuel everywhere gets old fast.

  11. #10
    Senior Member midge's Avatar
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    running out of gas gets old too

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